bush arrive to attend the memorial for nelson mandela with a moving tribute president obama paid to the leader. >> the federal hearing into asiana flight 214 crash at sfo scheduled to get underway right now is postponed. we will tell you why. >> good morning at 6:00. we start the morning with bart news. >> service between san francisco and dublin is moving normally now at this hour after passengers faced early morning delays. amy hollyfield has more on what is happening from the east bay. amy? >> kristen, more bart problems. what happened was there was a power outage at the daly city station and no train could get from the city to dublin and this station here in san leandro became a key player in this problem. they were bringing passengers here and they were taking them to dublin. so, it cause some delays and it was a round about way to get from one point to another and now the power is back on and life is returning to normal on bart but it will take time to get back to normal so expect residual delays. you have a bigger problem if you are just about to leave the house. >> there are res